[OT] Re: DAO pattern

[Antonio Petrelli <an...@gmail.com>]

2008/2/4, Zhang, Larry (L.) <lz...@ford.com>:
> Sorry if this is not too on topic.
>
> I have a user object whose data is from three resources: Db2, LDAP, and
> other flat file. Per dao pattern, do you think I should have three daos
> or one dao to encapsulate the data access implications?

It depends.
If you can have the user object from one source at a time, then the
best approach IMHO is one interface/3 implementations.
If you are getting this user object from these sources at the same
time, use one DAO, and manage connections inside it.

Ciao
Antonio

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